Case for electronic device



FIG. 1 is a left isometric view of a case for electronic device showing our new design;

FIG. 2 is a right isometric view thereof; and,

FIG. 3 is a front side view thereof.

All broken lines in the Figures show portions of the case for electronic device for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a case for electronic device, as shown and described. 